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@with gratta @anni @ffice JAMES WfLYON, OF BROOKLYN, NEW YORK.

Letters Patent No' 77,059, dated April 21, 1868.

IMPROVEMENT IN LAMP-SHADE SUPPOR'IERS.

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TO' ALL WHOM Il. MAYOONOERN Be it kpown that I, JAMES W. LYON, of the city of Brooklyn, in the county of lKings, and State of New York, have invented certain new and useful Improvements in Shade-Holders for Lamps and I do hereby declare that the following is a full and correct description thereof, reference lbeing had to the annexed drawing, and the letters of reference thereon.

The first part of my invention consistslin Aconstructing the clamping-ring centre ofthe shade-holder with a groove around the interior of the same, which groove corresponds with the bead formed upon the lower edge of the gallery of the flat-wick kerosene-burners, as universally made and sold. in market.

The second part of my invention consists in adapting the clamping-ring cen'tre to burners wherein the chimney is secured in 'its gallery by a thumb-screw, by making a partei' the clamping-ring centre narrower than the rest, se as to passunderthe screw, or otherwise removing a portion of the metal, so as to make room for the screw.

The third partei' my invention consists in the adaptation of the clamping-ringcentre to burners wherein the chimney is secured by a spring, commonly known as Joness Burners. This adaptation consists, in part, in having the clamping-ring centre so much shorter than the circumference of the burner. that the spring may play freely between the ears of the clamping-ring centre, the clamping-screw being long enough to hold the ring in such position, and-so placed as not to interfere with the action of the spring which heldsthechimney.

The fourth part of my invention consists in combining, with radial arms which support the shade, a clampingring centre, which is adapted, as above described, for either a'lamp-burner in which'the chimney is secured-by a thumb-screw, or o nc in which the chimney is secured by a spring, so that the shade-holder may be used, at

pleasure, for either kind of burners without change, the provision forr accommodating the thumb-screw of the one class of burners not interfering with the use of the shade-holders upon the burners which have the chimneyspring, and the provision for accommodating the spring not interfering with the use of the shade-holders upon burners which have the thumb-screw. I have shown, in the drawings, extensible radial arms attached to my improved clamping-ring centre; but it may be used with arms that are not extensible, the extensibility of the arms, whether by sliding or hinging, formingno part of the improvements hereinbefore described and set forth; but my inventionfurther consists in combining a clamping-ring centre, such as is hereinbefore described, with extensible supportingfarms, which arms may be made extensible by hinging them to the clamping-ring centre', or a projection therefrom, or by slides, as heretofore practised in lamp-shade holders having dilfcrent ring-centres.

It is well known that the lgreater proportion of lamps now used in this country have Hat-wick kerosene-oil burners, and that these burners, although Varying in many particulars, are made and sold in the market of certain determinate sizes with respect to the chimney-galleries, and, therefore, there is no diliculty in manufacturing my improved lamp-shade holder, and furnishing it separately, to be applied to kerosene-burners of a given size. All that is necessary is to make as many different sizes of `shade-holders asv there are diil`ercnt sizes of lampburners, should they vary greatly in size. It will be evident that a portion of my invention may be used without' using the whole, as, for instance, the provision for the chimney thumb-screwma-y be disregarded, if the shadeholder is to be used only with burners that have chimney-springs, and the provision for the chimney-springmay be disregarded, and the cars of the clamping-ring centre brought nearly together, if the shade-*holder is to be used only for burners which have chimney thumb-screws; but I have preferred to describe and show my vinvention in the form which enables it to lue-used with either class of burners, because that is the form `of it which will be most useful and salablc.

The drawings annexed illustrate my invention applied to lampburncrs- Figure I being a plan view, and Y y Figure 2 a side elevation of the shade-holder applied to a burner which has a chimney thumb-screw, and

Figures 3 and 4 being, respectively, a plan view and side elevation of the same applied toa burner which has a chimneyspring.

Figure 5 is a view in perspective of the clamping-ring centre, and

Figure 6 is a section, showing the fitting ofthe groove in the clamping-ring centre to the bead on the lower edgeof the gallery of the burner. i

In figs. 1 and 2, the arms a, which support tlie-`sl1ade, are shown extensible by sliding. In figs. 3 and 4, v

the supporting-arms a are extensible by hinges, a. I have not shown a non-extensible arm in the drawings, as they. are well known. The clamping-ring centro b is a strip of sheet metal, bent in a circular form, haring projecting ears, b', as shown clearly in the drawings, A screw being eutl in one of the ears, the clamping-ring e'entre is drawn together by a clamping-screw, o. A groove, cl, is formed, by stamping, or in any other convenient way, on the inside ofthe clamping-ring centre, at. the lower part thereof, for the purpose of embracing the bead e, at the lower corner or edge of the chimney-gallery, so that the clamping-ring centre, when screwed fast to the burner, may be held rmly and rigidly thereto. Atj', aportion ofthe metal of the clamping-ring centre is eut away,- to makeroom for thechimney thumb-screw g. For the sake of symmetry, another similar portion, 7a, is also cutaway. The groove d, when the clamp-ring centre is made of sheet metal, being a leorrugation, stiiiens the clamp-ringcentr; and, for the purpose of 4strength and ornament, other corrugations, z', may be formed. The radial arms a, whether extensible or non-extensible, are attached to the clamping-ring centre at suc'h distances apart as shall make them as near as may be equidistant from each other when the clamping-ring centre is applied to a burner of the size for which it is designed. It will be observed, by examining the dran'-,

ings, that suiicient space is left between the ears of the clamping-ring centre to allow the chimney-springj to play'freely between the ears when thrown back to release the chimney, and the arms must, therefore, be attached to the clamping-ring centre with reference to leaving this space between the ears of the clamping-ring centre when it is applied to the burner, and, at the same time, with reference' to being as near as maybe equidistant from each other when clamped to the burner.

' My improved shade-holder, by ren-son of its having a clamping-ring'eentre, and also by reason of the holdinggroove d, and the provision of the chimney-screw, is also especially adapted to that class of' kerosene-burners which have hinged chimney-holders, because, being clamped to the gallery, it permits the chimney-holder and chimney to be moved, by means of the hinge from over the wick-tube, without removing the shade-holder from the burner.

I claim as my invention and improvement in shade-holders for lamps- 1. Grooving the clamping-ring centre of the shade-holder on the-inside, correspondingly with the bead on the lower corner of the chimney-gallery ot' a kerosene-lamp burner, substantially as described, whereby the clamping-ring centre is held securely in place, and enabled to gripe the strongest part of the gallery, substani tially as set forth.

2. Adapting the clamping-ring centre of the shade-holder to burners which have chimney-screws, by remos'- ing a portion of the metal of the clamping-ring centre, which would otherwise interfere with the screw, substantially 4as describcd. I

3. Adapting the clamping-ring-centre shade-holder to burners which have chimney-springs, bythe relative arrangement of the radial arms with the clamping-ring centre, and its ears, and a clamping-screw of siiicient length, so that the spring can play freely'between the ears when thrown down to release the chimney, substantially as set forth. i

4. In combination with radial supporting-arms, a clamping-ring centre, constructed substantially as herein described, so that it may be applied either to a burner having a chimney thumb-screw,` or to burners having chimney-springs, at pleasure, and withoutichange.

5. In'combination with a clamping-ring centre,'extensible supporting-arms, whether sliding or hinged, substantially as described. x

JAMES W. LYON.

Witnesses:

F. C. TREADWELL, Jr., Jas, S. `WIGIITMANI 

